these 3 derivations will be built:
  /nix/store/y275i5wvnlc55z321sz91f22x5gjjlba-treefmt.toml.drv
  /nix/store/aj98rfmnjlibi4zbdbjvp5zk57nriv6q-treefmt.drv
  /nix/store/zpxran0xjvfnbmr4lba8p0ys54jv96f4-treefmt-check.drv